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Water companies, responding to Ofwat's challenge, have delivered improvements to customer services and the environment.
According to companies' annual returns for 2007-08:
* Every water company in England and Wales either hit or beat its leakage target;
* Overall leakage fell by 127 million litres per day (Ml/d) from 3,418 Ml/d in 2006-07 to 3,291 Ml/d in 2007/08. This is equal to the daily needs of nearly one million domestic consumers;
* The number of sewage treatment works seriously breaching permit limits set to protect the environment fell from 152 in 2006-07 to 107 in 2007-08 - the lowest number in the last 10 years;
* The number of serious sewage-related pollution incidents fell from 115 in 2006-07 to 83 in 2007-08 - one-fifth of level 12 years ago; and
* Most companies have reduced the number of properties at risk of sewer flooding, although the returns show that the number of sewer-flooding incidents increased because of last year's severe weather. [...]